电讯技术Issue(10)：1317-1320,4.DOI:10.3969/j.issn.1001-893x.2013.10.012
基于标记位的低密度格码整形方案
A Shaping Method for Low-Density Lattice Codes Based on Sign Bit Integer
朱联祥 1付孟孟1
作者信息
- 1. 重庆邮电大学 信号与信息处理重庆市重点实验室，重庆400065
- 折叠
摘要
Abstract
In order to solve the problem that the Low Density Lattice Codes( LDLC) cannot be applied in power limited channels, an LDLC shaping algorithm based on sign bits is proposed. Based on the algorithm of sign bits shaping and combined with the characteristic of low density lattice codes,this algorithm solves the minimizing average power information sequence by the min-sum algorithm. The shaping gain and the information power changes before and after shaping are analized. The simulation result shows that after sha-ping the code power is significantly less than that before shaping. The shaping gain is up to 0. 53 dB. At the same time, it is simple to realize inverse shaping at receiver by using this method.关键词
低密度格码/功率受限/标记位整形/最小和算法Key words
low-density lattice code/limited power/sign bit integer shaping/min-sum algorithm分类
信息技术与安全科学引用本文复制引用
朱联祥,付孟孟..基于标记位的低密度格码整形方案[J].电讯技术,2013,(10):1317-1320,4.
